in last post i introduced you to fact that stars were actually nothing but ball of gas and dust, but heck why they do glow?
most of us have only seen a bulb and tube light (some even see fluorescent watches as light source) but yes stars too glow like all these, in fact they have there own light, just like our beloved sun who is million-billion years old. our grandpa
to understand why they glow, we would have to go to molecular level, even towards atoms.
in our universe we have hydrogen in abundant which is a perfect fuel.
so far so good, hydrogen is fuel and it catches fire and starts burning, but wait, who lights hydrogen? who has the ability to light this hydrogen who's power still cannot be trapped by us humans?
answer : gravity
strange na! see, e know that everything is attracting each other, on earth even im attracting my keyboard with same force as it is attracting me, but it never overcomes gravitational force of earth nor i overcome my mass. so we are both at same place as we were, but in space, its different story. in space the only force is gravity but not by another thing, but themselves
like take a big block of mass, some stone, now it is hanging there is space, but due to its mass and Newtons theory it will start attracting things/gasses/dust/smaller stones towards itself, a more practical example is earth and moon.
so when the gasses start to get collect at one place due to attractive force between them, as there mass increases, there force of gravity also increases, increasing the force of gravitation, hence increasing the mass, this continues eternally (some million years, for us this is eternal :P ) then as the mass increases, pressure inside increases as well, which in turn pushes the hydrogen atoms in there closer and closer,
there something happens
the pressure ever rising
the temperature ever rising
hydrogen atoms coming closer and closer
and then suddenly.........
the two hydrogen atoms fuse (hence fusion), and release a massive amount of energy and high temperature
almost like 20 Hiroshima and Nagasaki in single blow, which ignites the rest of hydrogen
and a star is born........somewhere
which will continue to glow eternally somewhere....like our sun, like the nearest star...like those twinkling little things up above the sky......there how everything started
have you ever heard of fourth dimension?
lets talk about it in nxt edition :)
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